Tumour phyllodes is rare breast neoplasm. The majority arises in women between ages 35 and 55. Tumours phyllodes are composed of hypercellular mesenchymal stroma and epithelial elements. They are commonly classified as benign, rarely as borderline or malignant. Recurrences are observed in 8-36% patients and metastases--in 13-26%. There is a case of large (28 x 24 cm) malignant tumour phyllodes presented in the article. Mastectomy was performed. After surgical treatment of recurrent tumours (fibrosarcoma form) occurred two times during 1 year time. They were operated immediately. In spite of unfavorable prognostic features of the tumour (large size, malignant histological character) and recurrences, final therapeutic effect was good.